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ath5k: disable the unusable 2 GHz mode on the first radio of a dual-band AR5312 device

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SVN-Revision: 26587
This commit is contained in:
Felix Fietkau 2011-04-11 03:26:08 +00:00
parent 092de86b0a
commit 93da23803b
1 changed files with 50 additions and 0 deletions
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50
package/mac80211/patches/475-ath5k_fix_ar5312_5ghz_cap.patch Normal file
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@ -0,0 +1,50 @@
--- a/drivers/net/wireless/ath/ath5k/base.h
+++ b/drivers/net/wireless/ath/ath5k/base.h
@@ -193,12 +193,13 @@ struct ath5k_softc {
dma_addr_t desc_daddr; /* DMA (physical) address */
size_t desc_len; /* size of TX/RX descriptors */
- DECLARE_BITMAP(status, 5);
+ DECLARE_BITMAP(status, 6);
#define ATH_STAT_INVALID 0 /* disable hardware accesses */
#define ATH_STAT_MRRETRY 1 /* multi-rate retry support */
#define ATH_STAT_PROMISC 2
#define ATH_STAT_LEDSOFT 3 /* enable LED gpio status */
#define ATH_STAT_STARTED 4 /* opened & irqs enabled */
+#define ATH_STAT_2G_DISABLED 5 /* multiband radio without 2G */
unsigned int filter_flags; /* HW flags, AR5K_RX_FILTER_* */
struct ieee80211_channel *curchan; /* current h/w channel */
--- a/drivers/net/wireless/ath/ath5k/ahb.c
+++ b/drivers/net/wireless/ath/ath5k/ahb.c
@@ -160,6 +160,16 @@ static int ath_ahb_probe(struct platform
else
reg |= AR5K_AR5312_ENABLE_WLAN1;
__raw_writel(reg, (void __iomem *) AR5K_AR5312_ENABLE);
+
+ /*
+ * On a dual-band AR5312, the multiband radio is only
+ * used as pass-through. Disable 2 GHz support in the
+ * driver for it
+ */
+ if (to_platform_device(sc->dev)->id == 0 &&
+ (bcfg->config->flags & (BD_WLAN0|BD_WLAN1)) ==
+ (BD_WLAN1|BD_WLAN0))
+ __set_bit(ATH_STAT_2G_DISABLED, sc->status);
}
ret = ath5k_init_softc(sc, &ath_ahb_bus_ops);
--- a/drivers/net/wireless/ath/ath5k/attach.c
+++ b/drivers/net/wireless/ath/ath5k/attach.c
@@ -313,6 +313,11 @@ int ath5k_hw_init(struct ath5k_softc *sc
goto err;
}
+ if (test_bit(ATH_STAT_2G_DISABLED, sc->status)) {
+ __clear_bit(AR5K_MODE_11B, ah->ah_capabilities.cap_mode);
+ __clear_bit(AR5K_MODE_11G, ah->ah_capabilities.cap_mode);
+ }
+
/* Crypto settings */
common->keymax = (sc->ah->ah_version == AR5K_AR5210 ?
AR5K_KEYTABLE_SIZE_5210 : AR5K_KEYTABLE_SIZE_5211);